# # Data product developed by Dr. E. Thiemann from the # Laboratory for Atmospheric and Space Physics, Boulder, Colorado # in the frame of the PROBA2 guest investigator program. # # Please address your questions to E. Thiemann (thiemann@lasp.colorado.edu) and # to the LYRA Principal Investigator M. Dominique (marie.dominique@oma.be) # # PROBA2 data products are open to all. # Users should however refer to the following paper: http://arxiv.org/abs/1708.08833 # and acknowledge the instrument according to the rules described # at http://proba2.oma.be/data/termsOfUse in their papers and presentations # # Website reference http://proba2.oma.be/lyra/data/EarthAtmosphere/ # # Description: # Summed neutral N2 and O number density profiles, spanning altitudes between 150 and 400 km # retrieved from LYRA data acquired during occultations by the unit 3 (backup unit) zirconium # channel (bandpass: 1-2 nm + 6-20 nm). # # Radial distance is the distance from the center of Earth expressed in km to which the density corresponds. # Density O-N2 provides the summed number density of neutral O and N2 in units of radial distance and cm^-3. # The systematic error is a signed value (asymmetric) in fractional units and is primarily from the error made by # assuming that the absorption cross-sections of O and N2 are equal; a secondary source of systematic error is # from using a single-scale height atmosphere in the reference atmosphere used by the retrieval algorithm. # The random error is an unsigned value (to be applied symmetrically to the measurement) in fractional # units and gathers the uncertainties from solar spectra, solar variability and measurement noise. # Both uncertainties are described in http://arxiv.org/abs/1708.08833. # The Longitude and Latitude (in degrees) columns refer to the tangential point along the # line-of-sight, where most of the absorption occurs. # # Scale height = 52.144043 km # Date (UTC) = 2012-12-31T09:11:52.053 # Date (julian) = 2456292.88324135 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6505.9250 5.3570188e+10 0.072477381 0.034069873 115.79164 35.376613 6508.2804 4.9788861e+10 0.083770977 0.034780138 115.85736 35.265704 6510.6358 4.6194534e+10 0.095351013 0.035490403 115.92347 35.154144 6512.9912 4.2566352e+10 0.10712361 0.036200668 115.99742 35.029352 6515.3466 3.8910907e+10 0.11905690 0.036910933 116.07137 34.904559 6517.7020 3.5398566e+10 0.13118252 0.037621198 116.13806 34.792031 6520.0574 3.2410329e+10 0.14365043 0.038331463 116.20378 34.681122 6522.4128 2.9992269e+10 0.15537044 0.039025346 116.26766 34.570214 6524.7682 2.7873819e+10 0.16240211 0.039699865 116.32927 34.459305 6527.1236 2.5853411e+10 0.16781224 0.040806203 116.39108 34.348188 6529.4790 2.3670958e+10 0.17168225 0.042998787 116.46501 34.223424 6531.8344 2.1481294e+10 0.17535218 0.046443157 116.53895 34.098652 6534.1898 1.9487726e+10 0.17696267 0.047997652 116.60241 33.989164 6536.5452 1.7797287e+10 0.17737012 0.048278307 116.66402 33.882363 6538.9006 1.6306347e+10 0.17770252 0.049595227 116.72884 33.768076 6541.2560 1.4803641e+10 0.17689170 0.051243508 116.79817 33.643283 6543.6114 1.3378516e+10 0.17503498 0.051542359 116.86556 33.521995 6545.9668 1.2122390e+10 0.17206480 0.052464229 116.92717 33.411087 6548.3222 1.1095818e+10 0.16958512 0.053763868 116.98879 33.300179 6550.6776 1.0248169e+10 0.16653266 0.055155027 117.05041 33.189270 6553.0330 9.4839996e+09 0.16399073 0.055318473 117.11202 33.078362 6555.3884 8.7731851e+09 0.16127503 0.054527006 117.17482 32.963907 6557.7438 8.0875082e+09 0.15864351 0.053399883 117.23952 32.843756 6560.0992 7.4492376e+09 0.15574781 0.052184855 117.30354 32.725634 6562.4546 6.8997272e+09 0.15246806 0.050447320 117.36515 32.614726 6564.8100 6.4450555e+09 0.14952673 0.048404498 117.42677 32.503817 6567.1654 6.0027007e+09 0.14702803 0.046477322 117.49081 32.382006 6569.5208 5.5637141e+09 0.14487755 0.044886322 117.55552 32.257214 6571.8762 5.1321012e+09 0.14305928 0.044263962 117.61831 32.141053 6574.2316 4.7722733e+09 0.14033604 0.042743758 117.67992 32.030145 6576.5870 4.4657215e+09 0.13773307 0.040695718 117.74212 31.917507 6578.9424 4.1649370e+09 0.13447067 0.037161417 117.80681 31.797354 6581.2978 3.8696141e+09 0.13178726 0.035506423 117.87134 31.677416 6583.6532 3.5964208e+09 0.12926636 0.034691032 117.92885 31.566508 6586.0086 3.3711216e+09 0.12640864 0.033171185 117.98636 31.455600 6588.3640 3.1820351e+09 0.12402820 0.033258362 118.04387 31.344691 6590.7194 3.0154155e+09 0.12063666 0.029723814 118.10137 31.233783 6593.0748 2.8507321e+09 0.11740329 0.027032650 118.15999 31.121444 6595.4302 2.6778192e+09 0.11374640 0.025668187 118.22470 31.001273 6597.7856 2.5060795e+09 0.11039819 0.025474811 118.28941 30.881103 6600.1410 2.3486523e+09 0.10870755 0.025279817 118.34698 30.770110 6602.4964 2.2215363e+09 0.10741251 0.027092994 118.40449 30.659202 6604.8518 2.1113785e+09 0.10627109 0.026577069 118.46342 30.543151 6607.2072 1.9948547e+09 0.10517904 0.025297776 118.52350 30.422998 6609.5626 1.8773653e+09 0.10228755 0.023873062 118.58257 30.306473 6611.9180 1.7750905e+09 0.099903772 0.024373017 118.64007 30.195565 6614.2734 1.6855070e+09 0.099063079 0.023752101 118.69758 30.084656 6616.6288 1.5973608e+09 0.097775411 0.023380996 118.75755 29.964892 6618.9842 1.5055878e+09 0.097261071 0.024514018 118.81763 29.844739 6621.3396 1.4176702e+09 0.096596668 0.024976869 118.87567 29.731915 6623.6950 1.3440570e+09 0.094886087 0.024749330 118.93319 29.620992 6626.0504 1.2745345e+09 0.093680315 0.026526628 118.99163 29.506747 6628.4059 1.2021533e+09 0.092013263 0.025867874 119.05170 29.386595 6630.7613 1.1316521e+09 0.090402498 0.025930178 119.11047 29.268256 6633.1167 1.0697107e+09 0.088968196 0.026172619 119.16387 29.157347 6635.4721 1.0199825e+09 0.087263908 0.026470579 119.21727 29.046439 6637.8275 9.7009555e+08 0.085905570 0.025756150 119.27576 28.928490 6640.1829 9.1463717e+08 0.085731341 0.025248279 119.33583 28.808336 6642.5383 8.6066792e+08 0.085600262 0.025173723 119.39192 28.696164 6644.8937 8.1333524e+08 0.084468860 0.025440191 119.44532 28.589364 6647.2491 7.7760540e+08 0.083012245 0.026568911 119.49981 28.479629 6649.6045 7.4167556e+08 0.081778307 0.026800468 119.55989 28.354855 6651.9599 7.0500582e+08 0.081134668 0.027219761 119.61994 28.230112 6654.3153 6.6490972e+08 0.080374118 0.027901920 119.66927 28.123254 6656.6707 6.3488547e+08 0.078554901 0.028612056 119.71856 28.016440 6659.0261 6.0843201e+08 0.077109994 0.031829161 119.77396 27.902086 6661.3815 5.7834029e+08 0.076022436 0.032729239 119.83403 27.781933 6663.7369 5.4931721e+08 0.074878508 0.032279008 119.88978 27.665491 6666.0923 5.2055254e+08 0.075068092 0.026926575 119.93907 27.554583 6668.4477 4.9734402e+08 0.074289574 0.027866931 119.98837 27.443674 6670.8031 4.7856550e+08 0.074181161 0.026956582 120.04809 27.323828 6673.1585 4.5377834e+08 0.073957912 0.027696226 120.10816 27.203676 6675.5139 4.2906755e+08 0.072167683 0.030782615 120.16453 27.083523 6677.8693 4.0744960e+08 0.070822816 0.031122452 120.21998 26.963370 6680.2247 3.8826117e+08 0.071177648 0.029489933 120.27150 26.851750 6682.5801 3.7384402e+08 0.071980346 0.030867745 120.32079 26.744950 6684.9355 3.5745292e+08 0.072015427 0.032701563 120.37135 26.635414 6687.2909 3.3995475e+08 0.070171039 0.034180673 120.42681 26.515242 6689.6463 3.2233153e+08 0.067711596 0.033434267 120.48247 26.394882 6692.0017 3.0762768e+08 0.066626177 0.032763374 120.54254 26.270108 6694.3571 2.9431320e+08 0.065748421 0.030760554 120.60262 26.145335 6696.7125 2.8322609e+08 0.065360408 0.029971809 120.65324 26.036326 6699.0679 2.7220990e+08 0.063946397 0.031527792 120.70253 25.929526 6701.4233 2.6301167e+08 0.061932188 0.032030530 120.75250 25.816816 6703.7787 2.5231380e+08 0.061842502 0.035623763 120.80333 25.696663 6706.1341 2.4252920e+08 0.061759310 0.038679778 120.85545 25.576510 6708.4895 2.3028453e+08 0.061276357 0.040576617 120.91091 25.456357 6710.8449 2.2176072e+08 0.059619241 0.040661872 120.96637 25.336204 6713.2003 2.1227358e+08 0.057440129 0.044411046 121.02182 25.216051 6715.5557 2.0090536e+08 0.055367502 0.047946938 121.07728 25.095899 6717.9111 1.9125866e+08 0.053132228 0.049817913 121.13273 24.975746 6720.2665 1.7883588e+08 0.052037879 0.050388888 121.18819 24.855593 6722.6219 1.7231878e+08 0.051505314 0.049836375 121.23556 24.745938 6724.9773 1.6508416e+08 0.047105173 0.041765577 121.28075 24.639123 6727.3327 1.5901293e+08 0.045386765 0.040517132 121.32957 24.527602 6729.6881 1.5459990e+08 0.044355374 0.040586789 121.38502 24.407449 6732.0435 1.4639811e+08 0.042336379 0.043748218 121.43961 24.287296 6734.3989 1.3959848e+08 0.041525888 0.049329599 121.49044 24.167143 6736.7543 1.3397205e+08 0.043202758 0.053206706 121.54127 24.046990 6739.1097 1.3032522e+08 0.043824485 0.062960813 121.59211 23.926838 6741.4651 1.2629272e+08 0.042000799 0.067085209 121.64294 23.806686 6743.8205 1.1964151e+08 0.036987784 0.076582579 121.69775 23.690514 6746.1759 1.1243198e+08 0.034599778 0.076942111 121.75321 23.574982 6748.5313 1.0538151e+08 0.030965502 0.069812153 121.80544 23.456229 6750.8867 98865163. 0.027833107 0.073518230 121.85627 23.336077 6753.2421 92955580. 0.024624828 0.073760818 121.90711 23.215924 6755.5975 89896710. 0.022115985 0.074343373 121.95794 23.095770 6757.9529 89189938. 0.020881610 0.073848206 122.00878 22.975617 6760.3083 86631842. 0.021411495 0.076649221 122.05961 22.855465 6762.6637 79047468. 0.025675649 0.076980211 122.11045 22.735308 6765.0191 75063533. 0.028302404 0.079534683 122.16129 22.615138 6767.3745 72507340. 0.027297610 0.081556398 122.21213 22.495162 6769.7299 71774107. 0.022181183 0.086224647 122.26296 22.379630 6772.0853 70911096. 0.017881538 0.091937530 122.31380 22.264099 6774.4407 67459215. 0.013305457 0.097650414 122.37101 22.129438 6776.7961 66722450. 0.0089227271 0.10336330 122.42910 21.992118 6779.1515 63124564. 0.0041368793 0.10907618 122.48005 21.871700 6781.5069 58350371. -0.0010250237 0.11478906 122.53088 21.751546 6783.8623 55417064. -0.0062637874 0.12050195 122.57793 21.635186 6786.2177 55239082. -0.011434209 0.12621483 122.62414 21.519655 6788.5731 55744125. -0.017078183 0.13192771 122.67338 21.401089 6790.9285 54753672. -0.024288447 0.13764060 122.72422 21.280936 6793.2839 50992473. -0.036383117 0.14335348 122.77863 21.152323 6795.6393 49146261. -0.082977498 0.14906637 122.83673 21.015003 6797.9947 48019448. -0.052821765 0.15477925 122.88770 20.890744 6800.3501 46051066. 0.020681519 0.16049213 122.93391 20.775213